Marines from 3rd Battalion, 25th Marine Regiment, 4th Marine Division, participated in a Color Guard ceremony at game one of the 2016 World Series at Progressive Field in Cleveland, Oct. 25, 2016. Just before the ceremony, announcer Bob Tyek gave credit to the Marine Corps Reserve and its 100 years of faithful service. Today, approximately 500 Reserve Marines are providing fully integrate global operational support to the Fleet and Combatant Commanders. For more information on the history and heritage of the Marine Corps Reserve as well as current Marine stories and upcoming Centennial events, please visit www.marines.mil/usmcr100. (U.S. Marine Corps photo by Lance Cpl. Dallas Johnson) - Marines from 3rd Battalion, 25th Marine Regiment, 4th Marine Division, participated in a Color Guard ceremony at game one of the 2016 World Series at Progressive Field in Cleveland, Oct. 25, 2016. Just before the ceremony, announcer Bob Tyek gave credit to the Marine Corps Reserve and its 100 years of faithful service. Today, approximately 500 Reserve Marines are providing fully integrate global operational support to the Fleet and Combatant Commanders. For more information on the history and heritage of the Marine Corps Reserve as well as current Marine stories and upcoming Centennial events, please visit www.marines.mil/usmcr100. (U.S. Marine Corps photo by Lance Cpl. Dallas Johnson)

Marine Corps Band New Orleans, the Municipal Band of Humacao, and Puerto Rican Salsadero,Jerry Rivas, from El Gran Combo perform for the local residents and distinguished guest during the Marine Forces Reserve Centennial Celebration concert at the Centro De Bellas Artes in Humacao, Puerto Rico, Oct. 19, 2016. Marine Forces Reserve is commemorating 100 years of rich history, heritage, Espirit-de-corps across the U.S. This celebration recognizes the Reserve's essential role as a crisis response force and expeditionary force in readiness, constantly preparing to augment the active component. (U.S. Marine photo by Master Sgt. John A. Lee, II / Released) - Marine Corps Band New Orleans, the Municipal Band of Humacao, and Puerto Rican Salsadero,Jerry Rivas, from El Gran Combo perform for the local residents and distinguished guest during the Marine Forces Reserve Centennial Celebration concert at the Centro De Bellas Artes in Humacao, Puerto Rico, Oct. 19, 2016. Marine Forces Reserve is commemorating 100 years of rich history, heritage, Espirit-de-corps across the U.S. This celebration recognizes the Reserve's essential role as a crisis response force and expeditionary force in readiness, constantly preparing to augment the active component. (U.S. Marine photo by Master Sgt. John A. Lee, II / Released)

Lance Cpl. Santos Alfonso Nieves Baez, a landing support specialist with Detachment 1, Landing Support Company, Combat Logistics Regiment 45, 4th Marine Logistics Group, poses for a picture before the Marine Corps Reserve Centennial celebration concert begins at the Centro de Bellas Artes de Humacao, Oct. 20, 2016. Baez was joined by his unit, Marine Corps Band New Orleans and members of the Puerto Rican community to commemorate the Centennial of the Marine Corps Forces Reserve. (U.S. Marine Corps photo by Sgt. Sara Graham) - Lance Cpl. Santos Alfonso Nieves Baez, a landing support specialist with Detachment 1, Landing Support Company, Combat Logistics Regiment 45, 4th Marine Logistics Group, poses for a picture before the Marine Corps Reserve Centennial celebration concert begins at the Centro de Bellas Artes de Humacao, Oct. 20, 2016. Baez was joined by his unit, Marine Corps Band New Orleans and members of the Puerto Rican community to commemorate the Centennial of the Marine Corps Forces Reserve. (U.S. Marine Corps photo by Sgt. Sara Graham)

Chief Warrant Officer 4 Patrick M. Barnes, officer in charge, Admin Assist Unit, Marine Force Reserve, walks senior administrators through a practical application exercise that teaches process management by writing a procedure on how to make the perfect peanut butter sandwich during the 2016 Senior Administrator Symposium aboard Naval Air Station Joint Reserve Base Belle Chasse, La., Oct. 12-13, 2016. The symposium utilized instruction and practical application to help senior administrative personnel understand how and why the implementation of the Battalion Level Administrative Management initiative will improve Reserve units’ ability to pass MCAAT inspections. The initiative will mitigate the issues with the current system. (U.S. Marine Corps photo by Sgt. Sara Graham) - Chief Warrant Officer 4 Patrick M. Barnes, officer in charge, Admin Assist Unit, Marine Force Reserve, walks senior administrators through a practical application exercise that teaches process management by writing a procedure on how to make the perfect peanut butter sandwich during the 2016 Senior Administrator Symposium aboard Naval Air Station Joint Reserve Base Belle Chasse, La., Oct. 12-13, 2016. The symposium utilized instruction and practical application to help senior administrative personnel understand how and why the implementation of the Battalion Level Administrative Management initiative will improve Reserve units’ ability to pass MCAAT inspections. The initiative will mitigate the issues with the current system. (U.S. Marine Corps photo by Sgt. Sara Graham)

Staff Sgt. Mark A. Pellon (left), 12th Marine Corps district musician placement director, and a guest saxophone player with Marine Corps Band New Orleans, and Master Sgt. Timothy Otis (right), Marine Corps recruiting command head musician procurement, and trumpet player, demonstrate a song while teaching a Master class on music to students attending the Conservatorio de Musica de Puerto Rico in San Juan, before kicking off the Marine Corps Reserve Centennial celebration concert on Oct. 18, 2016. The Marine Corps Reserve is commemorating 100 years of rich history, heritage, espirit-de-corps, and a bond with Puerto Rico and communities across the U.S. The celebration recognizes the Reserve's essential role as a crisis response force and expeditionary force in readiness, constantly preparing to augment the active component. (U.S. Marine photo by Sgt. Sara Graham/Released) - Staff Sgt. Mark A. Pellon (left), 12th Marine Corps district musician placement director, and a guest saxophone player with Marine Corps Band New Orleans, and Master Sgt. Timothy Otis (right), Marine Corps recruiting command head musician procurement, and trumpet player, demonstrate a song while teaching a Master class on music to students attending the Conservatorio de Musica de Puerto Rico in San Juan, before kicking off the Marine Corps Reserve Centennial celebration concert on Oct. 18, 2016. The Marine Corps Reserve is commemorating 100 years of rich history, heritage, espirit-de-corps, and a bond with Puerto Rico and communities across the U.S. The celebration recognizes the Reserve's essential role as a crisis response force and expeditionary force in readiness, constantly preparing to augment the active component. (U.S. Marine photo by Sgt. Sara Graham/Released)

Roughly 500 current and past Marines stand in formation at Times Square for the U.S. Marine Corps Reserve Centennial celebration, Aug. 29, 2016. For 100 years the Marine Corps Reserve has answered the call, serving as our nation’s crisis response force and expeditionary force in readiness. The centennial celebration is a way to honor years of selfless service and celebrate the Marine Corps’ rich history, heritage and esprit de corps. The celebration brings awareness to the Reserve’s essential role as a crisis response force and expeditionary force in readiness that is always prepared to augment the active component. (U.S. Marine Corps photo by Sgt. Sara Graham) - Roughly 500 current and past Marines stand in formation at Times Square for the U.S. Marine Corps Reserve Centennial celebration, Aug. 29, 2016. For 100 years the Marine Corps Reserve has answered the call, serving as our nation’s crisis response force and expeditionary force in readiness. The centennial celebration is a way to honor years of selfless service and celebrate the Marine Corps’ rich history, heritage and esprit de corps. The celebration brings awareness to the Reserve’s essential role as a crisis response force and expeditionary force in readiness that is always prepared to augment the active component. (U.S. Marine Corps photo by Sgt. Sara Graham)

Marines with 6th Engineer Support Battalion, 4th Marine Logistics Group, Marine Forces Reserve, stand in formation as they attend the John H. Rich Jr. and Doris Lee Rich Memorial Beach and Ice Fishing Access Facility Dedication Ceremony in Standish, Maine, August 12, 2016. The Marines helped make the beach more accessible to the community during their annual Innovative Readiness Training exercise. (U.S. Marine Corps photo by Sgt. Sara Graham) - Marines with 6th Engineer Support Battalion, 4th Marine Logistics Group, Marine Forces Reserve, stand in formation as they attend the John H. Rich Jr. and Doris Lee Rich Memorial Beach and Ice Fishing Access Facility Dedication Ceremony in Standish, Maine, August 12, 2016. The Marines helped make the beach more accessible to the community during their annual Innovative Readiness Training exercise. (U.S. Marine Corps photo by Sgt. Sara Graham)

Marines with Engineer Services Company, Combat Logistics Battalion 23, Combat Logistics Regiment 4, 4th Marine Logistics Group, Marine Forces Reserve, discuss how to clean and repair a culvert in the road while working with the U.S. Forest Service during Exercise Forest Rattler in Oakridge, Ore., July 21, 2016. The exercise not only allowed the Marines to give back to the community by repairing roads they utilize, but gave them time to hone their skills as an engineering service company and complete a wide range of horizontal and vertical engineering projects. (U.S. Marine Corps photo by Sgt. Sara Graham/ Released) - Marines with Engineer Services Company, Combat Logistics Battalion 23, Combat Logistics Regiment 4, 4th Marine Logistics Group, Marine Forces Reserve, discuss how to clean and repair a culvert in the road while working with the U.S. Forest Service during Exercise Forest Rattler in Oakridge, Ore., July 21, 2016. The exercise not only allowed the Marines to give back to the community by repairing roads they utilize, but gave them time to hone their skills as an engineering service company and complete a wide range of horizontal and vertical engineering projects. (U.S. Marine Corps photo by Sgt. Sara Graham/ Released)